老年男性冠心病患者无症状心肌缺血的研究

目的：探讨老年男性冠心病患者无症状心肌缺血的发作特点及规律。方法：选择老年男性冠心病（Ⅰ组）、冠心病合并高血压病（Ⅱ组）及冠心病同时合并高血压病、2型糖尿病（Ⅲ组）患者各66例，对其进行动态心电图检查。结果：动态心电图检出老年男性冠心病患者心肌缺血主要为无症状心肌缺血（SMI）；SMI发生率Ⅲ组〉Ⅱ组〉Ⅰ组（P〈0．05），Ⅲ组的SMI总次数与Ⅱ组、Ⅰ组比较有显著差异（P〈0．05）；SMI持续时间Ⅲ组与Ⅱ组比较有显著差异（P〈0．05）；三组的发作高峰均在上午。日间SMI发生次数明显多于夜间，夜间SMI发生比例Ⅲ组与Ⅰ组比较有显著差异（P〈0．05），Ⅲ组昼夜SMI平均持续时间有显著差异（P〈0．05）。结论：高血压病、2型糖尿病均可增加老年男性冠心病患者SMI的发生，尤其是夜间的发生：动态心电图是老年男性冠心病，特别是合并高血压、2型糖尿病患者SMI的重要检测手段。     

Myocardial ischemia: a silent epidemic in Type 2 diabetes patients

The prevalence of diabetes mellitus is increasing consistently. Coronary artery disease (CAD) is the main cause of death; however, silent myocardial ischemia (SMI) is more frequent in diabetic patients. Early CAD diagnosis provided by SMI screening could lead to decreased cardiovascular complications and mortality. Current guidelines recommend screening for SMI in asymptomatic diabetic patients selected on a basis of high cardiovascular risk, followed by coronary angiogram in case of a positive stress test. However, the benefit of systematic SMI screening has not been demonstrated in diabetic patients with optimal treatment of risk factors. The benefit of revascularization in diabetic patients with SMI seems to be restricted to patients with severe CAD. Prospective studies are required to identify diabetic patients who may potentially benefit from SMI screening. These patients should have a high prevalence of severe CAD and potential benefit of revascularization, such as patients with renal failure, left ventricular dysfunction and peripheral or carotid occlusive arterial disease.     

Prediction of major coronary events by coronary risk profile and silent myocardial ischaemia: prospective follow-up study of primary prevention in 72 diabetic patients

The aim of this study was to examine the predictive value of coronary risk profile (CRP) for major coronary events in patients screened for silent myocardial ischemia (SMI). We studied 72 diabetic patients, aged 41 to 65 years, recruited consecutively at the Poitiers diabetes clinic. All patients had at least one cardiovascular risk factor associated with diabetes mellitus (type 1 diabetes duration > or =15 years, dyslipidaemia, smoking, hypertension, micro/macro-albuminuria). A structured questionnaire, physical examination and resting electrocardiogram provided no evidence of coronary heart disease. SMI was defined as positive exercise electrocardiogram and/or dipyridamole thallium myocardial scintigraphy. CRP was estimated using the Framingham equation adapted to the French population. We defined a high CRP value as annual CRP > or =1.5%. Major coronary events (MCE) were defined as myocardial infarction, ischaemic heart failure, unstable angina or sudden death. Twenty-one patients with type 1, and 51 with type 2 diabetes were followed up for 39+/-12 months: 30 women and 42 men, aged 55+/-7 years with diabetes duration of 16 +/- 11 years (mean +/- SD). SMI was detected in 8 patients. Major coronary events occurred in 8 patients, 2 of whom had SMI. High CRP was found in 18 patients, 3 of whom had MCE. CRP was significantly higher in those patients with a major coronary event (1.71 +/- 1.11 versus 1.03 +/- 0.56%; p=0.048), but not in those with SMI (1.19 +/- 0.72 vs 1.09 +/- 0.67%; p=0.654). In Kaplan-Meier survival analysis, a high CRP was associated with the risk of a major coronary event (log-rank=5.36; p=0.021), whereas SMI was not (log-rank=2.02; p=0.155). The cumulative incidence of MCE in those patients with high and low CRP was 8.08 (0.49-15.67) vs 2.15 (0.06-4.22) events per 100 patient year of follow-up, respectively. CONCLUSION: CRP had a good predictive value for major coronary events regardless the presence of SMI. Prevention should therefore be focused primarily on patients with high CRP, wether or not they have SMI.     

冠心病合并2型糖尿病患者临床表现与冠状动脉造影结果分析

目的探讨冠心病（CHD）合并2型糖尿病（NIDDM）患者的临床表现和冠状动脉病变特点。方法对80例冠心病合并2型糖尿病患者及与之配对的非糖尿病冠心病患者进行临床表现和血管造影资料对照分析。结果冠心病合并2型糖尿病组与配对组比较,有高血压病史者分别占71.5%和45.3%（P〈0.05）,有高血脂者分别占68.7%和42.2%（P〈0.05）,冠心病合并2型糖尿病组与配对组的3支病变比例分别为35.0%和12.5%（P〈0.05）,病变血管比例分别为68.3%和55.8%（P〈0.05）,弥漫性病变血管比例分别为15.0%和5.8%（P〈0.05）。两组的冠状动脉狭窄程度差异不明显（P〉0.05）。结论冠心病合并2型糖尿病患者的高血压、高血脂比例较高,其冠状动脉血管的病变特点有别于无糖尿病的冠心病患者,3支病变比例和弥漫性病变血管比例高,血管受累支数多,在对冠心病合并2型糖尿病患者的诊疗过程中要充分考虑其病变特点。     

Silent myocardial ischemia: a problem in diagnosis and treatment

We tried to establish the incidence of silent myocardial ischemia (SMI) in the general population and also in patients with recognised ischemic heart disease. For this, purpose 2, 375 stress tests (ST) with Bruce protocol were reviewed, 364 were positive and those patients were divided in two groups: group I with SMI during the ST and group II with myocardial ischemia and angina during the ST. Coronary risk factors ergometric behaviour and angiographic factors were analysed. Group I had 263 patients with SMI (71%). Group II had 111 patients with ischemia and angina (29%) P less than 0.05; 90 patients had diabetes mellitus in group I and 19 in group II P less than 0.05. A previous myocardial infarction was registered in 157 patients from group I and 55 from group II P less than 0.05. The remaining coronary risks factors, ergometrics variables and significance and number of diseased coronary vessels were similar in both groups. We conclude that SMI is a frequent event in patients with ischemic heart disease. It represents probably the most frequent event in this disease. Previous myocardial infarction and diabetes mellitus may play an important role in the pathogenesis of SMI. The ST and Holter monitoring are dependable procedures for the identification of SMI and should be always performed specially in patients with high coronary risk factors. Once detecting SMI a therapeutic plan should be considered for medical, angioplastic or surgical procedures even in asymptomatic patients.     

Association of the metabolic syndrome and insulin resistance with silent myocardial ischemia in patients with type 2 diabetes mellitus

Metabolic syndrome is associated with elevated morbidity and mortality for overt coronary artery disease (CAD). In diabetic patients, CAD is often silent. The relation between metabolic syndrome and silent CAD has never been studied. We investigated whether metabolic syndrome is associated with silent CAD in patients with type 2 diabetes mellitus. We evaluated the prevalence of metabolic syndrome in 169 patients with uncomplicated diabetes and angiographically verified silent CAD and in 158 diabetic patients without myocardial ischemia on exercise electrocardiography, 48-hours ambulatory electrocardiography, and stress echocardiography. The groups were comparable for gender, age, glycemic control, and diabetes duration. Metabolic syndrome was defined according to the National Cholesterol Education Program criteria. To estimate insulin resistance in patients treated with diet alone or oral agents (122 patients with CAD and 115 patients without CAD), the Homeostasis Model Insulin-Resistance Assessment (HOMA) was used. The prevalence of metabolic syndrome (59.8% vs 44.3%, p = 0.005) and HOMA (5.4 +/- 2.1 vs 4.9 +/- 2.8, p = 0.044) were significantly higher in those with CAD than in those without CAD. Multiple logistic regression analysis showed that the metabolic syndrome was associated with silent CAD (odds ratio 2.44, 95% confidence interval 1.19 to 5.02, p = 0.015). Among patients on diet alone or oral agents, the HOMA was the strongest predictor of silent CAD (odds ratio 10.16, 95% confidence interval 2.60 to 39.63, p < 0.001). In conclusion, our data have shown an independent association of metabolic syndrome and insulin resistance with silent CAD in patients with type 2 diabetes mellitus. Other studies are needed to establish whether metabolic syndrome and HOMA are reliable markers to identify diabetic patients for additional screening for silent CAD.     

Prevalence of left main coronary artery disease,of three- or four-vessel coronary artery disease,and of obstructive coronary artery disease in patients with and without peripheral arterial disease undergoing coronary angiography for suspected coronary artery disease

Data from the present investigation showed that the prevalence of current cigarette smoking, current or ex-cigarette smoking, systemic hypertension, diabetes mellitus, and dyslipidemia was significantly higher in patients with peripheral arterial disease (PAD) than in patients without PAD. The present report also showed that compared with patients without PAD undergoing coronary angiography for suspected coronary artery disease (CAD), patients with PAD undergoing coronary angiography for suspected CAD had a higher prevalence of left main CAD (18% vs <1%), a higher prevalence of 3- or 4-vessel CAD (63% vs 11%), and a higher prevalence of obstructive CAD (98% vs 81%).     

Significance of silent myocardial ischemia during exercise testing in patients with diabetes mellitus: a report from the Coronary Artery Surgery Study (CASS) Registry

To evaluate the significance of ischemic ST depression without anginal chest pain during exercise testing among patients with diabetes mellitus, the data on 45 such patients from the Coronary Artery Surgery Study registry were analyzed. These patients (group 1, silent ischemia) were compared with 37 diabetic patients with both ischemic ST depression and chest pain (group 2, symptomatic ischemia), with 31 diabetic patients without ischemic ST depression or chest pain (group 3, no ischemia), and with 429 patients without diabetes who had silent ischemia during exercise testing. All patients had documented coronary artery disease (CAD) (greater than 70% diameter narrowing). The 6-year survival among patients with silent ischemia was worse in diabetic than nondiabetic patients (59 vs 82%, respectively, p less than 0.001). By contrast, the 6-year survival among patients without ischemia was similar among diabetic and nondiabetic patients (93 vs 85%, respectively, p = 0.476). Among diabetic patients, survival at 6 years with medical treatment was 59% for group 1, 66% for group 2 and 93% for group 3 (p = 0.008). Survival among subsets of patients with diabetes and silent ischemia (group 1) based on the extent of CAD and left ventricular function ranged from 100 to 32% (p = 0.093). The survival of the 45 patients with diabetes mellitus and silent ischemia (group 1) treated medically was compared with that of 28 patients receiving coronary artery graft bypass surgery.(ABSTRACT TRUNCATED AT 250 WORDS)     

高敏C反应蛋白与原发性高血压合并无症状性心肌缺血的关系

目的 探讨血清高敏C反应蛋白水平与原发性高血压合并无症状性心肌缺血的关系.方法 横断面研究157例轻-中度原发性高血压患者,入选时心电图正常,无已知的冠心病.所有患者行运动试验,异常者行冠状动脉造影,依结果分为无症状性心肌缺血组(n=69)和对照组(n=88).所有患者记录一般临床指标并免疫比浊法测定血清高敏C反应蛋白水平.结果 69例(43.9%)原发性高血压患者确诊为无症状性心肌缺血;与对照组相比,无症状性心肌缺血组血清高敏C反应蛋白水平升高[ (3.13±1.55) mg/L比(1.33±0.91) mg/L,P<0.001],Logistic回归分析显示性别(OR=9.56,95%CI=2.57～35.60,P=0.001)、高敏C反应蛋白(OR=4.54,95%CI =2.47～8.35,P<0.001)和冠心病家族史(OR=0.11,95%CI=0.03～0.34,P<0.001)是发生无症状性心肌缺血的独立危险因素;随血清高敏C反应蛋白水平升高,无症状性心肌缺血患病率增加(P<0.01).结论 血清高敏C反应蛋白水平与无症状性心肌缺血相关.原发性高血压合并无症状性心肌缺血处于高危状态,需积极治疗,而高敏C反应蛋白可能成为检测原发性高血压合并无症状性心肌缺血的有效手段之一.     

糖尿病合并高血压对心,脑血管病变的影响

对１９９４例住院非胰岛素依赖型糖尿病（ＮＩＤＤＭ）合并高血压（ＨＴ）对心、脑血管病变的影响作回顾性研究。结果合并ＥＨ（８１５例，占４１．９２％）的病人中脑梗塞（２１７例，占１２．１９％），脑出血（９例，占０．４６％），冠心病（５７８例，占２９．７３％），心肌梗塞（１０３例，占５．３０％）的患病率显著高于正常血压ＮＩＤＤＭ组。多因素逐步回归分析显示高血压、肥胖和年龄的增加是ＮＩＤＤＭ患者并发心、脑血管病变的危险因素     

老年男性糖尿病患者心率变异性及无症状性心肌缺血观察

用Ｈｏｌｔｅｒ检测了５０例伴糖尿病的冠心病患者的心率变异性（ＨＲＶ），并与６０例非糖尿病的冠心病患者及４６例正常对照者进行对比分析。由此提示，糖尿病患者并发自主神经功能失调时心血管并发症的预后较严重。     

Silent myocardial ischemia and microalbuminuria in asymptomatic subjects with non-insulin-dependent diabetes mellitus

Microalbuminuria is an increase in urinary albumin not detected by conventional dipstick testing and is present in 20% of patients with non-insulin-dependent diabetes mellitus (NIDDM). Mortality in NIDDM patients with microalbuminuria is 60% at 8 years and is mainly due to cardiovascular disease. Because many deaths occur without warning symptoms, we have compared the prevalence and severity of silent myocardial ischemia in asymptomatic NIDDM patients with and without microalbuminuria. We have performed a cross-sectional, case-control study of asymptomatic NIDDM patients attending hospital diabetes clinics. Forty-three patients with microalbuminuria were matched for age, gender, diabetes duration, and smoking status with 43 normoalbuminuric patients. A symptom-limited exercise stress test was performed and reported blind to patient status. The degree of electrocardiographic ST-segment depression, exercise time, work performed, and maximum heart rate with exercise were recorded. Patients with microalbuminuria had a higher prevalence of ischemic response (>1 mm ST depression) (65% vs 40%, p = 0.016), reduced total exercise time (5 vs 7 minutes, p <0.001), reduced work (6 vs 8 METs, p <0.001), and reduced age-predicted maximum heart rate (94% vs 101%, p = 0.004). In multiple logistic regression, albumin excretion rate was shown to be the strongest independent predictor of ischemic response (p = 0.03). Silent myocardial ischemia is common in asymptomatic NIDDM patients but is more common in those with microalbuminuria. In these subjects, the higher prevalence of ischemic response at low workloads suggests a higher probability of future coronary events, and possibly a higher probability of potentially treatable coronary artery disease.     

冠心病合并2型糖尿病与非糖尿病患者的冠状动脉造影配对分析

目的　了解 2型糖尿病患者冠状动脉病变的造影特点。方法　对 4 5例有 2型糖尿病合并冠心病患者的冠状动脉造影结果进行分析 ,并与配对的 4 5例无糖尿病患者冠状动脉病变进行比较。结果　两组间病变血管数量差异无显著性 ;两组间“罪犯”病变狭窄程度差异无显著性 ;两组间非闭塞性“罪犯”病变的形态方面差异无显著性 ;两组间“罪犯”血管病变类型比较均差异无显著性。结论　 2型糖尿病患者与非糖尿病患者在冠状动脉病变的严重性和范围等方面无明显差异。     

Comparison of major coronary risk factors in female and male patients with premature coronary artery disease

OBJECTIVE: The present study was designed to analyse and compare the major coronary risk factors of female and male patients with premature coronary artery disease (CAD) aged < or = 45 years. METHODS: We evaluated 4613 consecutive patients who underwent coronary angiography at our institution; 572 symptomatic patients (489 men and 83 women) diagnosed as having premature CAD (age < or = 45 years) were included in our analysis. For each patient, the presence of major coronary risk factors such as family history of CAD, hypercholesterolaemia, diabetes mellitus, hypertension and cigarette smoking were recorded. Besides, clinical presentation and angiographic findings were also recorded. RESULTS: The most common risk factor was cigarette smoking in young men (70.3%). However, the major coronary risk factor was hypercholesterolaemia in young women (67.5%). When we compared two groups with respect to major coronary risk factors, we found that the prevalence of diabetes mellitus and hypertension were significantly higher in young women than in young men (diabetes mellitus: 27.7% vs. 12.3%, respectively, P < 0.001, hypertension: 56.6% vs. 23.4%, respectively, P < 0.001). However, cigarette smoking was found to be significantly higher in men than in women (70.3% vs. 28.9% respectively, P < 0.001). CONCLUSION: We have shown for the first time the impact of gender on the coronary risk factor profile in young Turkish patients with premature CAD. These findings may be useful for gender-based management and risk factor modification of young patients with premature CAD.     

N‐terminal pro‐B‐type natriuretic peptide: an independent marker for coronary artery disease in asymptomatic diabetic patients

Aims To determine whether plasma N‐terminal pro‐B‐type natriuretic peptide (NT‐proBNP) levels, a marker for cardiac failure and potentially for the severity of coronary artery disease (CAD), predicts silent myocardial ischaemia (SMI) and silent CAD in asymptomatic high‐risk diabetic patients. Methods Five hundred and seventeen asymptomatic diabetic patients with ≥ 1 additional cardiovascular risk factor but without heart failure were prospectively screened between 1998 and 2008 for SMI, defined as an abnormal stress myocardial scintigraphy, and subsequently for significant (> 70%) angiographic CAD. The 323 patients with interpretable echocardiography and for whom NT‐proBNP was measured were included in this analysis. Results SMI was found in 108 (33.4%) patients, 39 of whom had CAD. NT‐proBNP was higher in the patients with CAD than in the patients without CAD [45.0 (1–3199) vs. 20.0 (1–1640) pg/ml; P < 0.0001 median (range)], even after adjustment for confounding factors: age, gender, body mass index, glycated haemoglobin (HbA_1c), retinopathy, nephropathy, hypertension, echocardiographic parameters (P < 0.05). NT‐proBNP in the third tertile (≥ 38 pg/ml) predicted CAD with a sensitivity of 59% and a specificity of 67%. In a multiple logistic regression analysis including NT‐proBNP ≥ 38 pg/ml, age, body mass index, gender, HbA_1c, hypertension, retinopathy, nephropathy, peripheral occlusive arterial disease, left ventricular systolic dysfunction, dilatation and hypertrophy and Type 1 transmitral flow, NT‐proBNP ≥ 38 pg/ml was the only significant independent predictor of silent CAD [odds ratio (OR) 3.1 (95% confidence interval 1.3–7.6), P = 0.015]. Conclusions NT‐proBNP measurement helps to better define asymptomatic diabetic patients with an increased likelihood for CAD, independently of cardiac function and structure.     

Correlation between serum lipoprotein (a) and angiographic coronary artery disease in non-insulin-dependent diabetes mellitus

Abstract. Comlekqi A, Biberoglu S, Kozan 0, Bahqeci 0, Ergene 0, Nazli C, Kinay 0, Guner G (Dokuz Eylul University, Medical School, Inciralti, Izmir, Turkey). Correlation between serum lipoprotein(a) and angio-graphic coronary artery disease in non-insulin-dependent diabetes mellitus. J Intern Med 1997; 242:449-54.
Objectives: To examine the impact of diabetic state on the concentrations of lipoprotein(a) [Lp(a)] in patients with non-insulin-dependent diabetes mellitus (NIDDM) and the correlation between angiographic coronary artery disease (CAD) and serum Lp(a) concentrations in NIDDM.
Design: In this cross-sectional study of 26 patients with NIDDM and 19 nondiabetic sex- and agematched patients who underwent coronary angiography, CAD was assessed visually using coronary artery score (CAS), and plasma Lp(a) was measured by an enzyme-linked immunosorbent assay.
Setting: The study was performed in an internal medicine clinic at a university hospital.
Subjects: Twenty-six age- and sex-matched patients with NIDDM and 19 control patients without diabetes.
Results: There was no significant difference between the Lp(a) concentrations of patientswith NIDDM and nondiabetic subjects (P > 0.05). When patients with NIDDM were stratified by absence or presence of CAD, patients with CAD had higher levels of Lp(a) (P < 0.05). However, there was no significant correlation between the concentrations of Lp(a) and CAS (P > 0.05).
Conclusions: Diabetic state does not have any impact on Lp(a) concentrations. Lp(a) excess seems to be atherogenic in patients with NIDDM as shown in nondiabetic patients in previous studies. Although diabetic patients with CAD have higher Lp(a) concentrations than the diabetic patients without CAD, Lp(a) levels were not correlated with CAS.     

Comparison of presence and extent of coronary narrowing in patients with left bundle branch block without diabetes mellitus to patients with and without left bundle branch block but with diabetes mellitus

We prospectively analyzed the clinical, echocardiographic, and coronary arteriographic data of 51 patients with type 2 diabetes mellitus with left bundle branch block (LBBB), 51 patients with type 2 diabetes mellitus without LBBB, and 51 patients with isolated LBBB matched for age and gender. Extent of coronary artery disease (CAD) was classified according to the standard method into 1-, 2-, or 3-vessel disease and was estimated by calculation of the Gensini score. The left ventricular ejection fraction was analyzed by echocardiography. Age, gender, and percentage of patients with a smoking habit or family history of CAD did not differ among the groups. The rates of hypertension and levels of serum creatinine, cholesterol, and triglycerides were statistically higher in group I compared with the other 2 groups. Patients with diabetes and LBBB (group I) had significantly higher scores for the severity (Gensini score) of CAD (p <0.001) and more 3-vessel disease (p <0.001). After adjustment for hypertension, hypertriglyceridemia, and hypercholesterolemia with covariance analysis, the presence of LBBB was also associated with a higher Gensini score in patients with diabetes compared with those with diabetes but without LBBB and those with isolated LBBB (p <0.001). The present study, for the first time, has shown that patients with type 2 diabetes mellitus and concomitant LBBB have more severe and extensive CAD and advanced left ventricular dysfunction compared with those with diabetes but without LBBB and those with isolated LBBB.     

Clinical characteristics of silent myocardial ischemia and the effect of nifedipine treatment

The characteristics of ischemic episodes in exercise test and daily activities were observed in a silent myocardial ischemia (SMI) group and an anginal group (23 patients each). 15 patients in the SMI group were treated with nifedipine. In exercise test, the time of onset of ischemia was earlier and the ischemic threshold was lower in SMI group. During daily activities, the frequency of SMI was high. The heart rate just before onset of SMI was lower than the mean heart rate in 24-hour Holter monitoring. The highest frequency of SMI was found between 5 AM and 12 noon. Postinfarction patients had a higher frequency and a longer duration of SMI than noninfarction patients. The frequency and duration of SMI decreased in the 15 patients treated with nifedipine in SMI group. It is concluded that silent ischemic episodes were frequent and occurred easily. They might be associated with poor prognosis in CAD patients. Nifedipine was effective in reducing the frequency and duration of SMI in our patients.     

高敏C反应蛋白联合踝臂指数在原发性高血压合并无症状心肌缺血中的诊断价值

目的探讨血清高敏C反应蛋白（hs—CRP）联合踝臂指数（ABI）在原发性高血压患者发生无症状心肌缺血（SMI）中的诊断价值。方法依据157例轻中度原发性高血压患者24小时动态心电图（Hoher）,异常者行冠状动脉造影,将所有患者分为SMI组（35例）和对照组（122例）。收集患者的一般临床指标,测定血清hs—CRP水平,并进行ABI测量。结果与对照组相比,SMI组血清hs．CRP水平升高[（3．38±1．74）mg／LVS（1．76±1．24）mg／L,P=0．00];ABI水平降低[（0．97±0．14）V8（1．04±0．13）,P=0．004]。绘制ROC曲线,hs-CRP和ABI对SMI的诊断具低至中等预测价值,其截断点分别为2．10mg／L和0．96。hs—CRP联合ABI诊断SMI的灵敏度为88．5％,特异度为93．4％,阳性预测值为82．1％,阴性预测值为95．9％,误诊率为6．5％,漏诊率为1．2％。结论原发性高血压患者有较高的SMI患病率;SMI的发生与hs—CRP和ABI相关,hs-CRP和ABI两者联合对SMI有更高的诊断价值,可能成为检测高血压病合并SMI的有效手段。     

冠心病患者红细胞胰岛素酶活性与胰岛素受体检测及其意义

目的为探讨冠心病患者的胰岛素抵抗（ＩＲ）与其红细胞胰岛素酶活性（ＥＩＡ）及红细胞胰岛素受体（ＥＩＲ）的关系。方法检测５４例冠心病患者及３０例健康人的ＥＩＡ、ＥＩＲ及相关指标，并计算胰岛素敏感性指数（ＩＳＩ）。结果冠心病患者的ＥＩＡ、空腹血浆胰岛素水平（ＦＩＮＳ）、血浆总胆固醇（ＴＣ）、血浆甘油三酯（ＴＧ）及低密度脂蛋白（ＬＤＬ）水平显著高于正常对照组（Ｐ＜００１），而低亲和力ＥＩＲ位点数、ＩＳＩ、血浆高密度脂蛋白胆固醇组分２（ＨＤＬ２）显著低于正常对照组（Ｐ＜００１）。伴非胰岛素依赖型糖尿病及高血压的冠心病患者与不伴这些疾病的冠心病患者相比，前者的ＥＩＡ、ＦＩＮＳ高于后者，而ＩＳＩ低于后者（Ｐ＜００１或Ｐ＜００５）。相关分析表明，冠心病患者的ＥＩＡ与ＦＩＮＳ、ＴＧ显著正相关，与低亲和力ＥＩＲ位点数及ＩＳＩ呈显著负相关，患者的低亲和力ＥＩＲ位点数与ＦＩＮＳ及ＴＧ呈负相关。结论（１）冠心病患者存在胰岛素抵抗；（２）冠心病患者的胰岛素抵抗可能与其胰岛素酶活性及胰岛素受体活性异常有关；（３）红细胞胰岛素酶活性和红细胞胰岛素受体也许可以一定程度地反映机体的胰岛素敏感性。